Need Help: Formula Needed

Technical Motors
#21

http://www.pfeiffer-vacuum.de/

go here,

  1. click english flag, then click products, Turbopumps, online catalog
  2. click generation of a vacuum, turbopumps
  3. under "HiMag™ 2400, select the 3rd item down (PMP03492)
  4. click tech specs on bottom of page.

all pressures are rated in millibars.
1e-9mBar = 1.45 x 10^-11 PSI (my last post was incorrect on the magnitude)

Hope this works better.

#22

If you check out the specification areas at the bottom of the screen, you will note that cooling water (100L/hr) is required as well as high voltage power supply 208/230 volt and it takes 6 minutes to run up. Also specs require the use of an ontool dry pump to achieve vacuum.
I bet this is in the thousands of dollars range.